9/6/2012STScI-2012-3814.Odd Galaxy Couple on Space Voyage
Two very different galaxies drift through space together in this image taken by NASA's Hubble Space Telescope. The peculiar galaxy pair is called Arp 116. Arp 116 is composed... (More)

7/17/2012STScI-2012-2818.Why Is Earth So Dry?
With large swaths of oceans, rivers that snake for hundreds of miles, and behemoth glaciers near the north and south poles, Earth doesn't seem to have a water shortage. (More)

7/11/2012STScI-2012-3219.Hubble Discovers a Fifth Moon Orbiting Pluto
A team of astronomers using NASA's Hubble Space Telescope is reporting the discovery of another moon orbiting the icy dwarf planet Pluto. The moon is estimated to be irregular... (More)

7/10/2012STScI-2012-2620.Hubble Unmasks Ghost Galaxies
Astronomers have puzzled over why some puny, extremely faint dwarf galaxies spotted in our Milky Way galaxy's back yard contain so few stars. These ghost-like galaxies are thought... (More)